All it actually takes a matter of choosing the brand. Another thing – the choice lineup. Under the same name today you can find lines for various purposes, different price categories and, consequently, uneven performance and reliability. Descriptions of families, up to detailed specifications, published in the official manufacturer's website. To select the disk, thus affect primarily the needs and financial capabilities of the buyer. Often make adjustments situation in the local market (not all models may not be available), as well as changes to the production program. For all makes of it updated at least twice a year and have already been released line of permanent development. Further development includes both the debugging of the production process, and change versions of firmware.

In some cases, the detection of serious problems in firmware, the producers make the new version of the public, so that the users themselves patched previously purchased Railway (anything supernatural do not need, just run the downloaded file to execute). The new firmware would be corrected seen 'bugs', but more often it serves to increase the productivity and stability of the drive, including in difficult conditions (heat, vibration, etc.). This implies the first piece of advice: do not take without great need for the latest model, just released on the market. New items may contain unverified solutions in the design and firmware, and most importantly – are not stable in quality. A noticeable dispersion characteristics in different parties, and often cases of direct marriage. The technological fine-tuning usually takes 3-4 months, so that the first buyers of tangible risk.